Characterization of a Chromium (III) Ion Probe and its MOF-Supported Material

2020 ◽  
Vol 990 ◽  
pp. 296-301
Author(s):  
Ying Ying Guo ◽  
Lin Cai Peng ◽  
Long Yi ◽  
Shun Yao
Keyword(s):  
Schiff Base ◽  
Fluorescence Properties ◽  
Molar Ratio ◽  
Uv Absorbance ◽  
Complex Reaction ◽  
Ultraviolet Absorbance ◽  
Ion Probe ◽  
Probe Material

In order to explore more functional supported probe material, the ultraviolet absorbance together with fluorescence properties of a probe with the structure of salicylaldehyde Schiff-base in various solvents and pHs were investigated after its synthesis. When the concentration of Cr3+ ion was in the range of 3~7×10-5 mol•L-1, the complex reaction between the probe and Cr3+ could be used for quantitation of the latter, which was developed by UV absorbance intensity of the complex and the concentration of Cr3+ ion. Ultraviolet analytic results determined that they were complexed in the molar ratio of 1:1. Finally, the MOF-supported probe material was successfully synthesized for further application, which realized the immobilization of the probe through simple operations.

scholarly journals Antitumor and Antimicrobial Potential of Manganese(II), Nickel(II) and Copper(II) Complexes of 4-Methoxy Benzohydrazide Derived Schiff Base Ligand

2021 ◽  
Vol 11 (1) ◽  
pp. 3249-3260
Keyword(s):  
Schiff Base ◽  
Metal Complexes ◽  
Schiff Base Ligand ◽  
Antimicrobial Activities ◽  
Molar Ratio ◽  
Gram Positive Bacteria ◽  
Ft Ir ◽  
Dose Dependent

Herein, we describe the synthesis and characterization of a Schiff base ligand (E)-N'-(2-hydroxybenzylidene)-4-methoxybenzohydrazide (HBMB) and its Mn(II), Ni(II), and Cu(II) metal complexes (C1-C3) respectively. The ligand HBMB was synthesized by reacting condensation of salicylaldehyde and 4-methoxy benzohydrazide in a 1:1 molar ratio. The structure of HBMB and its metal complexes (C1-C3) were evaluated by using UV-Vis, FT-IR, 1H-NMR, mass spectroscopy as well as on the basis of elemental analysis, conductivity measurements, and thermogravimetric techniques (TGA). The synthesized molecules' tumoricidal properties were performed against human breast cancer (MCF-7) and colon cancer (HT 29) cell lines. The biological results indicated that the ligand, HBMB, and metal complexes possess dose-dependent selective cytotoxicity against the tested carcinoma cells. The synthesized compounds were further evaluated for their in vitro antimicrobial activities against Gram-positive bacteria (Staphylococcus aureus), Gram-negative bacteria (Escherichia coli), and fungal strains (Aspergillus niger).

scholarly journals Molecular Structure and Spectral Characterization of Diamagnetic Co(III) Complex Incorporating Hexaadentate Schiff Base Ligand

2019 ◽  
Vol 31 (8) ◽  
pp. 1871-1876
Author(s):  
Eida S. Al-Farraj ◽  
Amani S. Alturiqi ◽  
Murefah M. Anazy ◽  
Reda A. Ammar
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Atomic Charge ◽  
Molar Ratio ◽  
Lumo Energy ◽  
Ft Ir ◽  
Uv Visible ◽  
Homo Lumo ◽  
Mulliken Atomic Charge

A novel Co(III) complex derived from hexaadentate Schiff base ligand, H3L was described. The ligand is prepared from the reaction of tris-2-aminoethyl amine and o-vanillin in 1:3 molar ratio. The structure of the ligand and its Co(III) complex was described by micro-analyses, FT-IR, NMR, ESI-MS and UV/visible and thermal stability. DFT study was carried out to get insights into the ligand and its Co(III) complex to compare the values of bond lengths and angles with each other. The electronic spectra, Mulliken atomic charge distribution, HOMO-LUMO energy and the thermodynamic parameters have been calculated.

scholarly journals Preparation, Characterization and Study of the Photodecolorization of Mixed-Ligand Binuclear Co(II) Complex of Schiff Base by ZnO

2020 ◽  
Vol 20 (2) ◽  
pp. 404 ◽  
Author(s):  
Suhad Kareem Abass ◽  
Jassim Abbas Al-Hilfi ◽  
Sawsan Khudhair Abbas ◽  
Luma Majeed Ahmed
Keyword(s):  
Schiff Base ◽  
Binuclear Complex ◽  
Uv Light ◽  
Mixed Ligand ◽  
Molar Ratio ◽  
Melting Points ◽  
Initial Ph ◽  
Ft Ir ◽  
Prepared Complex

In this work, a new mixed-ligand binuclear Co(II) complex of Schiff base was prepared. Moreover, the characterization of this prepared complex was performed by measurement of melting points, UV-Vis spectra, FT-IR spectra, and magnetic susceptibility measurements, and later compared with metal and ligand solutions. It has been discovered that the Schiff bases with Co(II) ion forms a binuclear complex with a stoichiometry of molar ratio 1:2 from “metal:ligand”. The photodecolorization of this complex was done under UV light for ZnO's suspension solution. The results of this photodecolorization showed that the greatest efficiency was obtained with the use of ZnO dose of 300 mg/100 mL and at an initial pH of 7. The decolorization activation energy for this complex is a small value of 11.289 kJ mol–1. Additionally, the thermodynamic study for this reaction is non-spontaneous, endothermic and less random.

The Template Synthesis and Characterization of New Mono- and Dinuclear Podand Schiff Base Complexesof Scandium Group Elements

1998 ◽  
Vol 63 (3) ◽  
pp. 371-377 ◽  
Author(s):  
Emilia Luks ◽  
Wanda Radecka-Paryzek
Keyword(s):  
Schiff Base ◽  
Template Synthesis ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Elemental Analyses ◽  
Materials Used

The partial Schiff base condensation reactions between 2,6-diacetylpyridine and 1,3-phenylenediamine in the presence of scandium(III), yttrium(III) and lanthanum(III) ions as template agents afford new mono- and dinuclear hexadentate complexes of podate type, depending on the molar ratio of starting materials used in the synthesis. They were characterized by IR, UV-VIS, 1H NMR, and mass spectral data as well as by thermogravimetric and elemental analyses.

scholarly journals Synthesis and Characterization of [Sa(p-anisal-DA)4(H2O)2]by insitu Method

2019 ◽  
Vol 9 (2S4) ◽  
pp. 264-267
Keyword(s):  
Schiff Base ◽  
Metal Complex ◽  
Base Metal ◽  
Fourier Transforms ◽  
Molar Ratio ◽  
Nitrate Hexahydrate ◽  
X Ray Diffraction ◽  
Fourier Transforms Infrared Spectroscopy ◽  
Samarium Nitrate

The insitu synthesis of Schiff base metal complex using N-phenyl-1,4-phenylenediamine (DA), p-anisaldehyde (p-anisal) as starting materials with samarium nitrate hexahydrate (Sa(NO3)2.6H2O) as a metal precursor in the molar ratio (1:1:1 M) at room temperature. The prepared metal complex is washed with several times with ethanol and boiled water for the removal of un-reacted starting materials completely. The following techniques are used to confirm the prepared Schiff base metal complex by UV-visible spectroscopy, Fourier Transforms Infrared spectroscopy, X-ray diffraction pattern and Cyclic Voltammetry.

scholarly journals Synthesis and Spectral Studies of Ru(II) Carbonyl Schiff Base Complexes

2013 ◽  
Vol 8 ◽  
pp. 53-66 ◽  
Author(s):  
B. Prabhakaran ◽  
N. Santhi ◽  
M. Emayavaramban
Keyword(s):  
Schiff Base ◽  
Schiff Base Complexes ◽  
Molar Ratio ◽  
Spectral Studies ◽  
Tetradentate Schiff Base ◽  
H Nmr ◽  
Tetradentate Ligands ◽  
Ft Ir ◽  
Nmr Methods

The synthesis and characterization of hexa co-ordinated ruthenium(II) complexes of the type [Ru(CO)(B)(L)] (where B = PPh3, AsPh3, py or pip and L = dibasic tetradentate Schiff base ligand) were synthesized from the reaction of [RuHCl(CO)(B)(EPh3)2] (where E = P, B = PPh3, py or pip, E = As, B = AsPh3)with different tetradentate ligands. The ligands were derived by the condensation of 5-chloro-4-methyl-2-hydroxy benzophenone with ethylenediamine, propylenediamine and o-phenylene-diamine in 1:1 molar ratio. All the compounds have been characterized by elemental analysis and spectral (FT-IR, UV-VIS and 1H-NMR) methods. An octahedral environment around Ru(II) ion has been tentatively proposed for all the complexes

Synthesis and Characterization of Some New Esters Containing Heterocyclic and Derived From Azo Dyes

2019 ◽  
Vol 9 (02) ◽  
Author(s):  
Zena G. Alrecabi ◽  
Zainab Amer ◽  
Naeemah Al-Lami
Keyword(s):  
Schiff Base ◽  
13C Nmr ◽  
Azo Dyes ◽  
Spectral Methods ◽  
Anthranilic Acid ◽  
Heterocyclic Compounds ◽  
Synthesis And Characterization ◽  
Cooh Group ◽  
Molecular Weights

This study including prepared new colored esters containing heterocyclic with high molecular weights. In the first part of work we synthesized azo dyes [1,2] from the reaction p-toluidine with β-naphthol and o-nitro phenol, thin we synthesized Schiff bases [3,4] by the reaction anthranilic acid with benzaldehyde and dimethyl benzaldehyde. The reaction azo dyes (contain OH group) with Schiff base (contain COOH group) these led to produce the new colored esters [A1-A4]. The second part of work was modification the (C=N-) group in esters to heterocyclic compounds by reacting with phenyl iso cyanide to produce new β-lactam [B1-B4] and with anthranilic acid to get new hydroquinazoline [C1-C4]. All these compounds were characterized by physical properties and spectral methods FTIR, 1H-NMR and 13C-NMR.

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